I was tweaking your mod, and in the process I set the PLD's cooldown to 60 ticks (up from vanilla 20), thinking that the laser turret shooting speed research would take the PLD's RoF back up to 3.2 (up from vanilla 3 and down from the expected 9.6). It didn't, though, and the rate of fire stayed at one per second. Subsequent testing revealed that the PLD's fire rate, even with your mod installed, stays constant, independent of research.

Also, seeing that changing the PLD's ammo_type category from electric to laser-turret enables the damage research to apply, I tried setting the PLD's ammo_category to laser-turret, as that's what the shooting speed research modifies, but no luck on that, either, so I'm not sure what's going on under the hood.

Anyway, just letting you know that your mod is more of a debuff than advertised. Love the idea, though.